Timothy Tan, M.D
Family Medicine Physician · Chicago, IL
Timothy Tan, M.D is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1851348783, issued on May 27, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Timothy Tan
- Credential
- M.D
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- Practice location
- 4947 N Winthrop Ave, Chicago, IL 60640
- Phone
- (773) 989-9118
- Enumerated
- May 27, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 4947 N Winthrop Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Timothy Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Timothy Tan among 6,215 family medicine physician records in Illinois
Timothy Tan, M.D is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileNo · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,593 family medicine physician records list a practice address in Chicago
They are 1,593 of the 63,379 NPPES records with a practice address in Chicago, and 6,215 family medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 6,215 in Illinois → Every provider in Chicago → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Charles Crotteau, M.D.Chicago, IL 606401295757136
- Jose Elizondo, MDChicago, IL 606401912934985
- Anees Fatima, MDChicago, IL 606401154341709
- Richard Guthmann, MDChicago, IL 606401831112978
- My Mark, M.D.Chicago, IL 606401396772661
- James Mo, MDChicago, IL 606401962486571
Common questions
What is Timothy Tan, M.D's NPI number?
Timothy Tan, M.D's National Provider Identifier (NPI) is 1851348783, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Tan, M.D located?
The NPPES record lists a practice address at 4947 N Winthrop Ave, Chicago, IL, 60640. Phone: (773) 989-9118. Providers update this record themselves, so call before visiting.
How can I verify Timothy Tan, M.D's license?
Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.